Increase IO_BUFFER_SIZE to 3MB to handle open-gop MPEG files when sent
via pipe and first packets are not PAT or PMT packets.

Do not discard DTS/PTS when the handeling MPEG Streams with out
B-Frames.
Added debian packaging scripts
Set libav-tools to replace ffmpeg
Removed duplicate Replaces for libav-tools
Add option to disable xing header for mp3 encoding.
Merge branch 'release/9' into v9.1